Orange Pi5 kernel

/*
 * ialloc.c
 *
 * PURPOSE
 *	Inode allocation handling routines for the OSTA-UDF(tm) filesystem.
 *
 * COPYRIGHT
 *	This file is distributed under the terms of the GNU General Public
 *	License (GPL). Copies of the GPL can be obtained from:
 *		ftp://prep.ai.mit.edu/pub/gnu/GPL
 *	Each contributing author retains all rights to their own work.
 *
 *  (C) 1998-2001 Ben Fennema
 *
 * HISTORY
 *
 *  02/24/99 blf  Created.
 *
 */
 
#include "udfdecl.h"
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/slab.h>
 
#include "udf_i.h"
#include "udf_sb.h"
 
void udf_free_inode(struct inode *inode)
{
<------>struct super_block *sb = inode->i_sb;
<------>struct udf_sb_info *sbi = UDF_SB(sb);
<------>struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sb);
 
<------>if (lvidiu) {
<------><------>mutex_lock(&sbi->s_alloc_mutex);
<------><------>if (S_ISDIR(inode->i_mode))
<------><------><------>le32_add_cpu(&lvidiu->numDirs, -1);
<------><------>else
<------><------><------>le32_add_cpu(&lvidiu->numFiles, -1);
<------><------>udf_updated_lvid(sb);
<------><------>mutex_unlock(&sbi->s_alloc_mutex);
<------>}
 
<------>udf_free_blocks(sb, NULL, &UDF_I(inode)->i_location, 0, 1);
}
 
struct inode *udf_new_inode(struct inode *dir, umode_t mode)
{
<------>struct super_block *sb = dir->i_sb;
<------>struct udf_sb_info *sbi = UDF_SB(sb);
<------>struct inode *inode;
<------>udf_pblk_t block;
<------>uint32_t start = UDF_I(dir)->i_location.logicalBlockNum;
<------>struct udf_inode_info *iinfo;
<------>struct udf_inode_info *dinfo = UDF_I(dir);
<------>struct logicalVolIntegrityDescImpUse *lvidiu;
<------>int err;
 
<------>inode = new_inode(sb);
 
<------>if (!inode)
<------><------>return ERR_PTR(-ENOMEM);
 
<------>iinfo = UDF_I(inode);
<------>if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) {
<------><------>iinfo->i_efe = 1;
<------><------>if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev)
<------><------><------>sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE;
<------><------>iinfo->i_data = kzalloc(inode->i_sb->s_blocksize -
<------><------><------><------><------>sizeof(struct extendedFileEntry),
<------><------><------><------><------>GFP_KERNEL);
<------>} else {
<------><------>iinfo->i_efe = 0;
<------><------>iinfo->i_data = kzalloc(inode->i_sb->s_blocksize -
<------><------><------><------><------>sizeof(struct fileEntry),
<------><------><------><------><------>GFP_KERNEL);
<------>}
<------>if (!iinfo->i_data) {
<------><------>make_bad_inode(inode);
<------><------>iput(inode);
<------><------>return ERR_PTR(-ENOMEM);
<------>}
 
<------>err = -ENOSPC;
<------>block = udf_new_block(dir->i_sb, NULL,
<------><------><------>      dinfo->i_location.partitionReferenceNum,
<------><------><------>      start, &err);
<------>if (err) {
<------><------>make_bad_inode(inode);
<------><------>iput(inode);
<------><------>return ERR_PTR(err);
<------>}
 
<------>lvidiu = udf_sb_lvidiu(sb);
<------>if (lvidiu) {
<------><------>iinfo->i_unique = lvid_get_unique_id(sb);
<------><------>inode->i_generation = iinfo->i_unique;
<------><------>mutex_lock(&sbi->s_alloc_mutex);
<------><------>if (S_ISDIR(mode))
<------><------><------>le32_add_cpu(&lvidiu->numDirs, 1);
<------><------>else
<------><------><------>le32_add_cpu(&lvidiu->numFiles, 1);
<------><------>udf_updated_lvid(sb);
<------><------>mutex_unlock(&sbi->s_alloc_mutex);
<------>}
 
<------>inode_init_owner(inode, dir, mode);
<------>if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_SET))
<------><------>inode->i_uid = sbi->s_uid;
<------>if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_SET))
<------><------>inode->i_gid = sbi->s_gid;
 
<------>iinfo->i_location.logicalBlockNum = block;
<------>iinfo->i_location.partitionReferenceNum =
<------><------><------><------>dinfo->i_location.partitionReferenceNum;
<------>inode->i_ino = udf_get_lb_pblock(sb, &iinfo->i_location, 0);
<------>inode->i_blocks = 0;
<------>iinfo->i_lenEAttr = 0;
<------>iinfo->i_lenAlloc = 0;
<------>iinfo->i_use = 0;
<------>iinfo->i_checkpoint = 1;
<------>iinfo->i_extraPerms = FE_PERM_U_CHATTR;
<------>udf_update_extra_perms(inode, mode);
 
<------>if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB))
<------><------>iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
<------>else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
<------><------>iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;
<------>else
<------><------>iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
<------>inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
<------>iinfo->i_crtime = inode->i_mtime;
<------>if (unlikely(insert_inode_locked(inode) < 0)) {
<------><------>make_bad_inode(inode);
<------><------>iput(inode);
<------><------>return ERR_PTR(-EIO);
<------>}
<------>mark_inode_dirty(inode);
 
<------>return inode;
}